Jeong J U,Tao B,Sagasser I,Henniges H,Sharpless K B.Bromine-catalyzed aziridination of olefins.A rare example of atom-transfer redox catalysis by a main group element.Journal of the American Chemical Society. 1998Bromine-catalyzed aziridination of olefins. A rare example of atom-transfer redox ...
Jeong J U,Tao B,Sagasser I,Henniges H,Sharpless K B.Bromine-catalyzed aziridination of olefins.A rare example of atom-transfer redox catalysis by a main group element.Journal of the American Chemical Society. 1998Bromine-catalyzed aziridination of olefins. A rare example of atom-transfer redox ...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
Quantum mechanics thinks that all atoms do not have permanent electric dipole moment (EDM) because of their spherical symmetry. Therefore, there is no polar atom in nature except for polar molecules. The electric susceptibility Xe caused by the orientation of polar substances is inversely proportional...
不,我们没有所以这个词,因为我们在创造反例。 open.163.com 10. Agoodcounter-exampleisAtom,aformatforexchangingWebfeedsofinformation,definedin RFC4287. 一个很好的反例是Atom,这是RFC4287中定义的一种Web信息提要交换格式。 www.ibm.com 1 2 3
#On Window PowerShell (not cmd.exe!!!)$env:npm_config_target="1.7.6"#electron version$env:npm_config_runtime="electron"$env:npm_config_disturl="https://atom.io/download/electron"$env:npm_config_build_from_source="true"#may not be necessary#$env:npm_config_arch="x64"#$env:npm_con...
Treatment of the fulvalene compound FvCr(2)(CO)(4)(PMe(2)Ph)(2)H-2 with 2 molar equiv of trityl radicals (Ph(3)C .) results in hydride hydrogen. atomion and formation of triphenylmethane and the new chromium-chromium-bonded dimer trans-FvCr(2)(CO)(4)(PMe(2)Ph)(2) (4). Ch...
Two-dimensional (2D) materials combine many fascinating properties that make them more interesting than their three-dimensional counterparts for a variety of applications. For example, 2D materials exhibit stronger electron-phonon and electron-hole inter
n_i = atom_fea.shape[0] # number of atoms for this crystal batch_atom_fea.append(atom_fea) batch_nbr_fea.append(nbr_fea) batch_nbr_fea_idx.append(nbr_fea_idx + base_idx) new_idx = paddle.to_tensor(np.arange(n_i) + int(base_idx), dtype="int64") ...
Thermal [2 + 2] cycloaddition of allenes with an additional multiple bond is described. By simply heating the allenenes or allenynes having a three-atom te... O Hiroaki,M Tsuyoshi,K Yoichi,... - 《Journal of Organic Chemistry》 被引量: 156发表: 2007年 First example of [3+2] cycload...